Let's get this math done. We have 278 and we're going to multiply it by 260. This is the same as taking 278 and adding it to itself 260 times.
Step 1: 0 + 278 = 278
Step 2: 278 + 278 = 556
Step 3: 556 + 278 = 834
Step 4: 834 + 278 = 1112
Step 5: 1112 + 278 = 1390
Step 6: 1390 + 278 = 1668
Step 7: 1668 + 278 = 1946
Step 8: 1946 + 278 = 2224
Step 9: 2224 + 278 = 2502
Step 10: 2502 + 278 = 2780
Step 11: 2780 + 278 = 3058
Step 12: 3058 + 278 = 3336
Step 13: 3336 + 278 = 3614
Step 14: 3614 + 278 = 3892
Step 15: 3892 + 278 = 4170
Step 16: 4170 + 278 = 4448
Step 17: 4448 + 278 = 4726
Step 18: 4726 + 278 = 5004
Step 19: 5004 + 278 = 5282
Step 20: 5282 + 278 = 5560
Step 21: 5560 + 278 = 5838
Step 22: 5838 + 278 = 6116
Step 23: 6116 + 278 = 6394
Step 24: 6394 + 278 = 6672
Step 25: 6672 + 278 = 6950
Step 26: 6950 + 278 = 7228
Step 27: 7228 + 278 = 7506
Step 28: 7506 + 278 = 7784
Step 29: 7784 + 278 = 8062
Step 30: 8062 + 278 = 8340
Step 31: 8340 + 278 = 8618
Step 32: 8618 + 278 = 8896
Step 33: 8896 + 278 = 9174
Step 34: 9174 + 278 = 9452
Step 35: 9452 + 278 = 9730
Step 36: 9730 + 278 = 10008
Step 37: 10008 + 278 = 10286
Step 38: 10286 + 278 = 10564
Step 39: 10564 + 278 = 10842
Step 40: 10842 + 278 = 11120
Step 41: 11120 + 278 = 11398
Step 42: 11398 + 278 = 11676
Step 43: 11676 + 278 = 11954
Step 44: 11954 + 278 = 12232
Step 45: 12232 + 278 = 12510
Step 46: 12510 + 278 = 12788
Step 47: 12788 + 278 = 13066
Step 48: 13066 + 278 = 13344
Step 49: 13344 + 278 = 13622
Step 50: 13622 + 278 = 13900
Step 51: 13900 + 278 = 14178
Step 52: 14178 + 278 = 14456
Step 53: 14456 + 278 = 14734
Step 54: 14734 + 278 = 15012
Step 55: 15012 + 278 = 15290
Step 56: 15290 + 278 = 15568
Step 57: 15568 + 278 = 15846
Step 58: 15846 + 278 = 16124
Step 59: 16124 + 278 = 16402
Step 60: 16402 + 278 = 16680
Step 61: 16680 + 278 = 16958
Step 62: 16958 + 278 = 17236
Step 63: 17236 + 278 = 17514
Step 64: 17514 + 278 = 17792
Step 65: 17792 + 278 = 18070
Step 66: 18070 + 278 = 18348
Step 67: 18348 + 278 = 18626
Step 68: 18626 + 278 = 18904
Step 69: 18904 + 278 = 19182
Step 70: 19182 + 278 = 19460
Step 71: 19460 + 278 = 19738
Step 72: 19738 + 278 = 20016
Step 73: 20016 + 278 = 20294
Step 74: 20294 + 278 = 20572
Step 75: 20572 + 278 = 20850
Step 76: 20850 + 278 = 21128
Step 77: 21128 + 278 = 21406
Step 78: 21406 + 278 = 21684
Step 79: 21684 + 278 = 21962
Step 80: 21962 + 278 = 22240
Step 81: 22240 + 278 = 22518
Step 82: 22518 + 278 = 22796
Step 83: 22796 + 278 = 23074
Step 84: 23074 + 278 = 23352
Step 85: 23352 + 278 = 23630
Step 86: 23630 + 278 = 23908
Step 87: 23908 + 278 = 24186
Step 88: 24186 + 278 = 24464
Step 89: 24464 + 278 = 24742
Step 90: 24742 + 278 = 25020
Step 91: 25020 + 278 = 25298
Step 92: 25298 + 278 = 25576
Step 93: 25576 + 278 = 25854
Step 94: 25854 + 278 = 26132
Step 95: 26132 + 278 = 26410
Step 96: 26410 + 278 = 26688
Step 97: 26688 + 278 = 26966
Step 98: 26966 + 278 = 27244
Step 99: 27244 + 278 = 27522
Step 100: 27522 + 278 = 27800
Step 101: 27800 + 278 = 28078
Step 102: 28078 + 278 = 28356
Step 103: 28356 + 278 = 28634
Step 104: 28634 + 278 = 28912
Step 105: 28912 + 278 = 29190
Step 106: 29190 + 278 = 29468
Step 107: 29468 + 278 = 29746
Step 108: 29746 + 278 = 30024
Step 109: 30024 + 278 = 30302
Step 110: 30302 + 278 = 30580
Step 111: 30580 + 278 = 30858
Step 112: 30858 + 278 = 31136
Step 113: 31136 + 278 = 31414
Step 114: 31414 + 278 = 31692
Step 115: 31692 + 278 = 31970
Step 116: 31970 + 278 = 32248
Step 117: 32248 + 278 = 32526
Step 118: 32526 + 278 = 32804
Step 119: 32804 + 278 = 33082
Step 120: 33082 + 278 = 33360
Step 121: 33360 + 278 = 33638
Step 122: 33638 + 278 = 33916
Step 123: 33916 + 278 = 34194
Step 124: 34194 + 278 = 34472
Step 125: 34472 + 278 = 34750
Step 126: 34750 + 278 = 35028
Step 127: 35028 + 278 = 35306
Step 128: 35306 + 278 = 35584
Step 129: 35584 + 278 = 35862
Step 130: 35862 + 278 = 36140
Step 131: 36140 + 278 = 36418
Step 132: 36418 + 278 = 36696
Step 133: 36696 + 278 = 36974
Step 134: 36974 + 278 = 37252
Step 135: 37252 + 278 = 37530
Step 136: 37530 + 278 = 37808
Step 137: 37808 + 278 = 38086
Step 138: 38086 + 278 = 38364
Step 139: 38364 + 278 = 38642
Step 140: 38642 + 278 = 38920
Step 141: 38920 + 278 = 39198
Step 142: 39198 + 278 = 39476
Step 143: 39476 + 278 = 39754
Step 144: 39754 + 278 = 40032
Step 145: 40032 + 278 = 40310
Step 146: 40310 + 278 = 40588
Step 147: 40588 + 278 = 40866
Step 148: 40866 + 278 = 41144
Step 149: 41144 + 278 = 41422
Step 150: 41422 + 278 = 41700
Step 151: 41700 + 278 = 41978
Step 152: 41978 + 278 = 42256
Step 153: 42256 + 278 = 42534
Step 154: 42534 + 278 = 42812
Step 155: 42812 + 278 = 43090
Step 156: 43090 + 278 = 43368
Step 157: 43368 + 278 = 43646
Step 158: 43646 + 278 = 43924
Step 159: 43924 + 278 = 44202
Step 160: 44202 + 278 = 44480
Step 161: 44480 + 278 = 44758
Step 162: 44758 + 278 = 45036
Step 163: 45036 + 278 = 45314
Step 164: 45314 + 278 = 45592
Step 165: 45592 + 278 = 45870
Step 166: 45870 + 278 = 46148
Step 167: 46148 + 278 = 46426
Step 168: 46426 + 278 = 46704
Step 169: 46704 + 278 = 46982
Step 170: 46982 + 278 = 47260
Step 171: 47260 + 278 = 47538
Step 172: 47538 + 278 = 47816
Step 173: 47816 + 278 = 48094
Step 174: 48094 + 278 = 48372
Step 175: 48372 + 278 = 48650
Step 176: 48650 + 278 = 48928
Step 177: 48928 + 278 = 49206
Step 178: 49206 + 278 = 49484
Step 179: 49484 + 278 = 49762
Step 180: 49762 + 278 = 50040
Step 181: 50040 + 278 = 50318
Step 182: 50318 + 278 = 50596
Step 183: 50596 + 278 = 50874
Step 184: 50874 + 278 = 51152
Step 185: 51152 + 278 = 51430
Step 186: 51430 + 278 = 51708
Step 187: 51708 + 278 = 51986
Step 188: 51986 + 278 = 52264
Step 189: 52264 + 278 = 52542
Step 190: 52542 + 278 = 52820
Step 191: 52820 + 278 = 53098
Step 192: 53098 + 278 = 53376
Step 193: 53376 + 278 = 53654
Step 194: 53654 + 278 = 53932
Step 195: 53932 + 278 = 54210
Step 196: 54210 + 278 = 54488
Step 197: 54488 + 278 = 54766
Step 198: 54766 + 278 = 55044
Step 199: 55044 + 278 = 55322
Step 200: 55322 + 278 = 55600
Step 201: 55600 + 278 = 55878
Step 202: 55878 + 278 = 56156
Step 203: 56156 + 278 = 56434
Step 204: 56434 + 278 = 56712
Step 205: 56712 + 278 = 56990
Step 206: 56990 + 278 = 57268
Step 207: 57268 + 278 = 57546
Step 208: 57546 + 278 = 57824
Step 209: 57824 + 278 = 58102
Step 210: 58102 + 278 = 58380
Step 211: 58380 + 278 = 58658
Step 212: 58658 + 278 = 58936
Step 213: 58936 + 278 = 59214
Step 214: 59214 + 278 = 59492
Step 215: 59492 + 278 = 59770
Step 216: 59770 + 278 = 60048
Step 217: 60048 + 278 = 60326
Step 218: 60326 + 278 = 60604
Step 219: 60604 + 278 = 60882
Step 220: 60882 + 278 = 61160
Step 221: 61160 + 278 = 61438
Step 222: 61438 + 278 = 61716
Step 223: 61716 + 278 = 61994
Step 224: 61994 + 278 = 62272
Step 225: 62272 + 278 = 62550
Step 226: 62550 + 278 = 62828
Step 227: 62828 + 278 = 63106
Step 228: 63106 + 278 = 63384
Step 229: 63384 + 278 = 63662
Step 230: 63662 + 278 = 63940
Step 231: 63940 + 278 = 64218
Step 232: 64218 + 278 = 64496
Step 233: 64496 + 278 = 64774
Step 234: 64774 + 278 = 65052
Step 235: 65052 + 278 = 65330
Step 236: 65330 + 278 = 65608
Step 237: 65608 + 278 = 65886
Step 238: 65886 + 278 = 66164
Step 239: 66164 + 278 = 66442
Step 240: 66442 + 278 = 66720
Step 241: 66720 + 278 = 66998
Step 242: 66998 + 278 = 67276
Step 243: 67276 + 278 = 67554
Step 244: 67554 + 278 = 67832
Step 245: 67832 + 278 = 68110
Step 246: 68110 + 278 = 68388
Step 247: 68388 + 278 = 68666
Step 248: 68666 + 278 = 68944
Step 249: 68944 + 278 = 69222
Step 250: 69222 + 278 = 69500
Step 251: 69500 + 278 = 69778
Step 252: 69778 + 278 = 70056
Step 253: 70056 + 278 = 70334
Step 254: 70334 + 278 = 70612
Step 255: 70612 + 278 = 70890
Step 256: 70890 + 278 = 71168
Step 257: 71168 + 278 = 71446
Step 258: 71446 + 278 = 71724
Step 259: 71724 + 278 = 72002
Step 260: 72002 + 278 = 72280

So, 278*260 = 72280